
Arduino MKR 485 Shield
Sold outWant to add serial communications to your device using the RS-485 protocol? The Arduino MKR 485 shield will provide the industrial connectivity you need.
Overview
Thanks to this shield, you can now connect your MKR board to any of the industrial systems that using the RS 485 protocol.
The MKR 485 shield is the ultimate expansion that allows MKR boards to connect to almost any legacy industrial system, such as industrial PLCs, controllers, drives and HMIs. Old industrial systems (e.g., machinery, heating systems, and conveyors) can to turned into IoT devices through a serial connection using the MKR 485.
The shield is based on the MAXIM MAX3157 ( Datasheet ) and provides Half / Full Duplex .
Standard operational mode: Half Duplex
Tech specs
Interface | Serial |
Circuit Operating Voltage | 3.3 V |
Transceiver | MAXIM MAX3157 (datasheet) |
Buck converter | Texas Instruments TPS54232 (datasheet) |
Vin (screw connector) | 7 V - 24 V |
Vin (header) | 5 V |
Compatibilty | MKR size |
Switchable onboard termination resistor | |
Operating mode | Isolated Half / full duplex (switchable) |
Conformities
Resources for Safety and Products
Manufacturer Information
The production information includes the address and related details of the product manufacturer.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
https://www.arduino.cc/
Responsible Person in the EU
An EU-based economic operator who ensures the product's compliance with the required regulations.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
Phone: +39 0113157477
Email: support@arduino.cc
Documentation
OSH: Schematics
The Arduino MKR 485 Sheld is open-source hardware! You can build your own board using the following files:
EAGLE FILES IN .ZIP SCHEMATICS IN .PDFLearn more
Get Inspired

This year’s Arduino Day, held on March 16th, consisted of 659 celebrations across 106 countries with talks, project exhibitions, open activities, workshops, live demos, hackathons, and Ask the Expert sessions. The Official Arduino Day event took place in Milan, in collaboration with Manifattura (see photos), where Massimo Banzi and Fabio Violante unveiled some important figures on Arduino, including the number of IDE downloads over the last year (28M), active users (863K), and Forum contributors (762K). They also presented the latest additions to the MKR family — the MKR GPS Shield, the MKR RGB Shield, the MKR ENV Shield and the MKR THERM Shield — as well as announced the development of the Vidor Visual Composer. Other keynote sessions by our team focused on Arduino and the open source community, the winners of the Arduino Day Community Challenge, the new Arduino IoT Cloud, and highlights around Arduino Education. Were you unable to join us in Italy or tune in to the Arduino Day live stream? Well, we’ve got some good news. You can watch the event in its entirety below, including the AMA with Massimo Banzi! We are immensely proud of the amazing success of Arduino Day 2019, and we want to THANK all of the communities that helped make this special occasion possible. Already looking ahead to next year? Mark your calendars, because Arduino Day 2020 will be taking place on March 21st. In the meantime, don’t forget to share any images or videos of your Arduino Day fun with the hashtag #ArduinoD19!